Ore-concentrator



( No Model.) s Sheets-Sheet 1.

S. L. BURKE.

ORE GONGENTRATOR.

No. 427,551. Patented May 13, 1890.

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(No Model.) 8 Sheets-Shee n 2.

SCL. BURKE.

- ORE GONOENTRATOR. No. 427,551. Patented May'ls, 1890.

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(No Model.) s Sheets-Sheet 3.

S. L. BURKE. ORE GONGBNTRATOR.

No; 427,551. Patented May 13, 1890.

(No Model.) 8 Sheets-Sheet 5.

S. L. BURKE.

ORE OONGENTRATOR.

N0. 427,551. Patented May 18, 1890.

No Model.) 8 Sheets-Sheet e. .S. L. BURKE.

v ORE GONGENTRATOR. No. 427,551. Patented May 13, 1890.

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(No Model.) 8 Sheets-Sheet 7. S. L. BURKE.

ORB OONGENTRYATOR.

Patented May 13, 1890.

(No Model.) 8'SheetsSheet a.

S. L. BURKE. ORB GONOENTRATOR.

Patented May 13, 1890. E 12.

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UNITED STATES PATENT OFFICE.

STEPIIEN L. BURKE, OF ST. LOUIS, MISSOURI, ASSIGNOR OF FIVE-SIXTHS, BYDIRECT AND MESNE ASSIGNMENTS, TO FRANCIS M. JENKS, WILLIAM A. .IENKS,JOHN C. NIAL, CHARLES L. MCDONALD, ROBERT CARRIOK, AND ISRAEL E.RUSSELL, ALL OF SAME PLACE, AND JOHN SOIIAFFER, OF KIRK- woon, MISSOURI.

SPECIFICATION forming part of Letters Patent No. 427,551, dated May 13,1890.

' Application filed July 28, 1888. Serial No. 281,334. (No model.)

a pulverizer by an elevator, the machine be-' ing broken away at the topfor want of space. Fig. 2 is a similar view of the top portion of themachine. Figs. 3 and 4, respectively, represent front and rearelevations of the machine. Fig. 5 represents a plan view of the same.Fig. 6 represents a vertical section on the line 7 7 of Fig. 5. Fig. 7is a vertical section on the line 8 8 of Fig. 6. Fig. 8 is a verticaltransverse section of the concentrator. Fig. 9 is a vertical section onthe lines 10 10 of Fig. 10. Fig. 10 is a perspective view of one of thecollocting-pockets of the concentrator. Fig. 11 is a perspective View ofthe drawerbelowsaid pocket. Fig. 12 is a detail sectional View of themeans for regulating the air-cue rents to the hoppers of theconcentrator. Fig. 13 is a detail view of the device for adjusting theinclination of the sieve at top of the c011- centrator.

In practice the ore-concentrator is connected to an ore-pulverizer by anelevator. Both pulverizer andelevator may be of common construction, asthey form no part of the present invention, but are preferablyconstructed in the manner indicated in the drawings.

Referring to the drawings by letter, K designates the casin g of theconcentrator, of general rectangular form and having the end walls 75and side walls 7.5 as shown in Fig. 4.

I designates a chute or spout, which deliv- 5 ers the pulverized orefrom the elevator II that connects the pulverizer and concentrator. Thechute I deposits the pulverized ore upon the upper end of an inclinedsieve or screen J, secured in the upper end of the casing K and dividedinto portions jj, having meshes of different degrees of fineness, thefiner-meshed screen being, of course, above. The tail of the sieve Jdelivers into a hopper Q, which is the highest of a series of hoppers.The screen j delivers to a similar series of hoppers m m m &c., and thehighest screen jdelivers to a series of vibrating pockets, which pocketsand hoppers are hereinafter described, and the operation thereofexplained. The sieve J may have its inclination adj usted by means ofthe slotted bar j" and setscrew f, Figs. 8 and 13, in the usual manner.From the screenj the finer pulverized ore descends upon the ehutejsecured in the easing K", into the highest pocket K of the series, allthe pockets being similar. The said pocket has a rectangular base and isconstructed as follows: The sides and ends of the pocket and the upperedges of the said ends are inclined downward from the delivery side ofthe pocket, as shown in Fig. 10.

'The bottom of the pocket inclines downward and inward from its ends toa central opening, which is closed by a slide that moves in suitablegrooves in the sides of the pocket. Below said opening is formed areceivingchamber k open at bottom, which can be closed by a slide 7c,similar to the former slide and moving in similar grooves. These slideshave their outer ends turned downward to form handles.

7c is a chute secured to the receiving side of the pocket, and Ir? is asimilar chute secured to the delivery side thereof, to carry the orematerial over said pocket to the next below. The receiving sides of thepockets are situated alternately on opposite sides of the casing, andsecured to the latter above each chute 7c are directing-plates 7.2 thatconvey material from the chute j to the highest pocket K, and from eachpocket to the next below. The pockets are vibrated or reciprocatedlengthwise by the following means:

Each pocket is hung by straps h te the adj acent wall of the casing K Lis a vertical rod secured at the points Z Z to the corresponding ends ofthe pockets K, K, and K Fig. 7, and pivoted at a suitable point Z to theupper end of a vertical rod L, the lower end of which is secured to theshaker or' shoe of the pulverizer with which the concentrator isconnected, so that the motion of said shaker is imparted to the pockets.As the material passes down and the pockets reciprocate, the coarserparticles caught by each will settle and accumulate therein till it isfull, when the finer particles will pass over the pocket, the plate 70and chutes 70 lo to the next pocket below, so that each pocket willaccumulate finer particles than the one next above, thus giving a numberof grades of pulverized ore, the material that passes over the lowestpocket escaping through an opening 70 in the lower end of the casing Kand forming the finest grade of ore.

To withdraw the material from the pockets, drawers 10 are fitted insuitable openings in the casing below the slides 70, so that by drawingoutward a slide 70 the corresponding receiving-chamber 70 may be filled,and by closing said slide and opening the corresponding slide 10 thecontents of said chamber may be discharged into the drawer 7x3 below,from whence the material is removed in the usual manner. The materialthat passes through the screen j descends into the highest hopper of theseries M M to the inclined perforated ore-bed N therebelow, which isseparated from the next lower hopper by a transverse partition, Fig. 6,forming an air-chamber between said ore-bed and hopper.

12 n are inclined gates secured to the easing near to and above thelower ends of the ore-beds N N N of the series, and n n are chutessecured in the mouths of the hoppers below said gates, which standoutward from the ore-beds, leaving a discharge space or opening betweenthe two, which opening is on the side of the concentrator opposite thepulverizer. At the opposite side the air-chambers below the ore-beds areprovided with openings, into which enter the adjacent ends of air-pipes0 0 that extend froma blower O, operated from the main shaft of thepulverizer. The air entering said pipes and chambers passes through-theperforations in the ore-beds in the direction of the arrows 0' anddrives the lighter particles of the ore material from said beds over thegates at n into the compartment P, whence they fall out of the casing.The heavier particles pass between the lower ends of the ore-beds andthe adjacent gates, (see Fig. 6,) and are directed by the chutes n n tothe next lower hopper,

The coarsest material from the sieve lighter particles are blown intothe compartment 1. By means of set-screws 0 and engaging nuts set into asuitable part of the easing, Fig. 12, the flexible portions of the pipesthat convey air to the ore-beds of the concentrator may be compressed,and the currents thus regulated.

Having described my invention, I claim- 1. In an ore-concentrator, thecombination, with a reciprocating pocket arranged to receive pulverizedmaterial from above and having an opening in its bottom, of a receiving-chamber attached to the pocket below said opening and slides torespectively close the top and bottom of said receiving-chamber,substantially as specified.

2. In an ore-concentrator, the combination, with the casing K of averticalseries of similar reciprocating pockets K K K hung to the casingby the straps k and provided with openings in their bottoms, thereceivingchutes k, secured to the pockets on one side, thedelivery-chutes 70 secured thereto on the opposite side, thereceiving-chambers k below the openings in the bottoms of the pockets,the slides k 10 the directing-plates 70 and the drawers 70 below theslides 7e substantially as specified.

3. In an ore-concentrator, the combination, with the rectangular casinghaving the discharge-opening k at its lower end, the inclined adjustablesieve above the casing and the chute below said sieve, of the verticalseries of reciprocating pockets hung within the casing and havingopenings in their bottoms, the receiving-chutes and delivering-chutesat,- tached to said pockets, the directing-plates between each adjacentdelivering and receiving chute, the receiving-chambers below andattached to the pockets, the slides to respectively close the tops andbottoms of said chambers, and the drawers below the pockets,substantially as specified.

Witness my hand this 30th day of June,.

